Merge pull request #1960 from RosettaCommons/roccomoretti/XML_roundtrip
Add quoting to script outputting.
Now that we have XSD validation, input RosettaScripts XMLs need to have quoted options/attributes. However, the tracer-output of the parsed XML currently omits the quotes. Ideally, the outputted script should be 'round-trip-able' (that is, functional for feeding back into Rosetta as input.)
This change enables quoting of options/attributes by default in the script output, so that the output script looks "proper".
No test changes expected, aside from the obvious integration test log changes.